How to Configure a Physical Interface After
System Installation

Before You Begin

Determine the IPv4 addresses that
you want to use for the additional interfaces.

Ensure that the physical interface to be configured has been
physically installed onto the system. For information about installing separately
purchased NIC hardware, refer to the manufacturer's instructions that accompany
the NIC.

If you have just installed the interface, perform a reconfiguration
boot before proceeding with the next task.

On the system with the interfaces to be configured, assume the
Primary Administrator role or become superuser.

(Optional) To make the interface configuration persist across
reboots, perform the following steps:

Create an /etc/hostname.interface file
for each interface to be configured.

For example, to add a qfe0 interface,
you would create the following file:

# vi /etc/hostname.qfe0

Note –

If you create alternate hostname files for the
same interface, the alternate files must also follow the naming format hostname.[0–9]*, such as hostname.qfe0.a123. Names such as hostname.qfe0.bak or hostname.qfe0.old are
invalid and will be ignored by scripts during system boot.

Note,
too, that a given interface must have only one corresponding hostname file.
If you create an alternate hostname file for an interface with a valid filename,
such as /etc/hostname.qfe and /etc/hostname.qfe.a123, the boot scripts will attempt to configure by referencing the
contents of both hostname files and would therefore generate errors. To prevent
these errors, provide an invalid file name to the hostname file that you do
not want to use in a given configuration.

Edit the /etc/hostname.interface file.

At a minimum, add the IPv4 address of the interface to the file.
You can use traditional IPv4 notation or CIDR notation to specify the IP address
of the interface. You can also add a netmask and other configuration information
to the file.